An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3000 and 6000 m. Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains cover more than 50% of the Earth âs surface. They are among the flattest, smoothest and least explored regions on Earth.
Jim Beckwourth. On this day in 1844, Jim Beckwourth discovered a path through the Sierra Nevada Mountains that now bear his name. Beckwourth Pass on U.S. Alt 40 between Reno, Nevada and Sacramento, California made overland travel to the gold fields of California. Tweet.
Dedicated to the pioneers who crossed the Sierra on their way to the west, it stands on the spot where the Schallenberger, and later the Breen, cabin once stood. California Historical Landmark #134 it was completed on June 6th 1918, and sits atop a 22 foot pedestal and faces westward toward Donner Pass.